SU781755A1

SU781755A1 - Time shift measuring device

Info

Publication number: SU781755A1
Application number: SU782696184A
Authority: SU
Inventors: Олег Борисович Скворцов
Original assignee: За витель
Priority date: 1978-12-12
Filing date: 1978-12-12
Publication date: 1980-11-23

Description

Изобретение относится к измерительной технике и может быть использовано в устройствах контроля временных сдвигов сигналов корреляционного типа. ’The invention relates to measuring technique and can be used in devices for controlling the time shifts of correlation-type signals. ’

Известен корреляционный измеритель относительного временного сдвига, содержащий блок вычитания, блок управления, блок усреднения, блок задержки и два блока умножения [1] .Known correlation meter relative relative time shift containing a subtraction unit, a control unit, an averaging unit, a delay unit, and two multiplication units [1].

Недостатки известного устройства низкая надежность и точность его работы. - . _____________ ________'.....The disadvantages of the known device is the low reliability and accuracy of its operation. -. _____________ ________'.....

Цель изобретения - повышение точности и надежности устройства. 15The purpose of the invention is to improve the accuracy and reliability of the device. fifteen

Цель достигается тем, что в устройство для измерения временного сдвига дополнительно введены блок задержки, третий и четвертый блоки умножения, сумматор, первый и второй блоки де- 20 ления, блок вычитания приращений, блок умножения-суммирования.The goal is achieved in that a delay unit, a third and fourth multiplication unit, an adder, a first and second division unit 20, an increment subtraction unit, a multiplication-sum unit are additionally introduced into the device for measuring the time shift.

На чертеже приведена структурная схема предлагаемого устройства.The drawing shows a structural diagram of the proposed device.

Устройство для измерения времен- 25 ного сдвига содержит дополнительный блок 1 задержки, блок 2 задержки, четыре блока 3,4,5 и 6 умножения, блок 7 вычитания, блок 8 суммирования, блок 9 деления, блок 10 вычис- 30 ления приращения, блок 11 умножениясуммирования, блок 12 деления, блок 13 усреднения, блок 14 индикации и блок 15 управления. Вход дополнительного блока 1 задержки соединен с первым входом 16 устройства и первыми входами первого и второго блоков 6 и 5 умножения, вторые входы которых соединены соответственно с вторым входом 17 устройства и выходом блока 2 задержки, вход которого соединен с вторым входом 17 устройства и первым входом четвертого блока 3 умножения, второй вход которого соединен с первым входом третьего блока 4 умножения и выходом дополнительного блока 1 задержки, а выход блока 2 задержки соединен с вторым входом третьего блока 4 умножения. Выходы блоков 4 и 5 умножения соединены с входами блока 8 суммирования, а выходы блоков 3 и 6 умножения соединены соответственно с входами вычитания и суммирования блока 7 вычитания, выход которого соединен с первым входом блока 9 деления, второй вход - вход знаменателя - соединен с выходом блока 8 суммирования. Выход блока 9 деления соединен с вхоцами блока 10 вычисления приращений и блока 11 умножения-суммирования, выхода которых соединены соответственно с входами числителя и знаменателя блока 12 деления, выход которого соединен с входом блока 13 усреднения, управляющий вход которого соединен с дополнительным выходом блока.15 уп- 5 равлёния, выход которого соединен с управляющим входом блока 14 индикации, информационный вход которого соединен с выходом блока 13 усреднения. 10 * Устройство работает следующим образом.A device for measuring a time shift of 25 comprises an additional delay unit 1, a delay unit 2, four multiplication blocks 3,4,5 and 6, a subtraction unit 7, an addition unit 8, a division unit 9, an increment calculation unit 10, a unit 11 summation multiplication, division unit 12, averaging unit 13, indication unit 14 and control unit 15. The input of the additional delay unit 1 is connected to the first input 16 of the device and the first inputs of the first and second multiplication blocks 6 and 5, the second inputs of which are connected respectively to the second input 17 of the device and the output of the delay unit 2, the input of which is connected to the second input 17 of the device and the first input the fourth block 3 of the multiplication, the second input of which is connected to the first input of the third block 4 of the multiplication and the output of the additional block 1 delay, and the output of the block 2 of the delay is connected to the second input of the third block 4 of the multiplication. The outputs of the multiplication blocks 4 and 5 are connected to the inputs of the summing block 8, and the outputs of the multiplication blocks 3 and 6 are connected respectively to the subtraction and summing inputs of the subtraction block 7, the output of which is connected to the first input of the division unit 9, the second input is the input of the denominator is connected to the output block 8 summation. The output of the division unit 9 is connected to the leads of the increment calculation unit 10 and the multiplication-sum unit 11, the outputs of which are connected to the inputs of the numerator and denominator of the division unit 12, the output of which is connected to the input of the averaging unit 13, the control input of which is connected to the additional output of the unit.15 control unit 5, the output of which is connected to the control input of the display unit 14, the information input of which is connected to the output of the averaging unit 13. 10 * The device operates as follows.

Перед началом измерений, а также перед началом очередного замера по ’ сигналу с дополнительного выхода бло- 15 ка 15 управления проводится запись в блок 13 усреднения начального значения временного сдвига, относительно которого будут затем отсчитываться изменения этого относительного временного сдвига во времени. В качег стве такого начального значения можно взять,. например нулевое значение, что позволит в дальнейшем в блоке 14 индикации непосредственно Фиксировать в каждый момент времени возросла или 25 уменьшилась в этот момент времени величина относительного временного, сдви•га по сравнению с исходным значением. Исследуемые сигналы подаются на входы 16 и 17 устройства. 30Before the start of the measurements, as well as before the start of the next measurement by a signal from the additional output of the control unit 15, a record is made in the averaging unit 13 of the initial value of the time shift, relative to which the changes in this relative time shift in time will then be counted. As such an initial value, we can take ,. for example, a zero value, which will make it possible later in the display unit 14 to directly Fix at each time instant, the relative time value, shift • is decreased or decreased at that moment in time compared to the initial value. The studied signals are fed to the inputs 16 and 17 of the device. thirty

На выходах блока 2 задержки и дополнительного блока 1 задержки Формируются сигналы X и У, сдвинутые относительно поступающих сигналов на чет-верть периода. 35At the outputs of the delay unit 2 and the additional delay unit 1, X and Y signals are generated, shifted relative to the incoming signals by a quarter of the period. 35

Входные и сформированные, задержанные сигналы подаются на блоки 3,4,5 и 6 умножения.Input and generated delayed signals are supplied to blocks 3,4,5 and 6 of the multiplication.

Сигналы с выходов блоков 4 и 5 умножения поступают на блок 8 суммирования.The signals from the outputs of blocks 4 and 5 of the multiplication arrive at block 8 summation.

Сигналы с выходов блоков 3 и 6 умножения поступают на.блок 7 вычитания.The signals from the outputs of blocks 3 and 6 of the multiplication are supplied to the block 7 subtraction.

Сигналы с выходов блока 7 вычитания и блока 8 суммирования поступают 45 на входы блока 9 деления, на выходе которого Формируется сигнал, который подается на входы блока 10 Формирования приращений и блока 11 умножениясуммирования. Блок 10 вычисления при- 50 ращений вычисляет производную сигнала, подаваемого на его вход. Получен ные сигналы с выходов блоков 10 и 11 подаются на блок 12 деления, на выходе которого Формируется сигнал, который подается на вход блока 13 усреднения, на выходе которого формируется сигнал, пропорциональный изменению относительного временного сдвига по сравнению с исходным моментом времени.·The signals from the outputs of the subtraction unit 7 and the summing unit 8 are fed to the inputs of the division unit 9, at the output of which a signal is generated, which is fed to the inputs of the increment formation unit 10 and the summing multiplier 11. The increment calculation unit 10 calculates a derivative of the signal supplied to its input. The received signals from the outputs of blocks 10 and 11 are fed to the division block 12, at the output of which a signal is generated, which is fed to the input of the averaging block 13, the output of which is a signal proportional to the change in the relative time shift compared to the initial time.

Claims

The invention relates to a measuring technique and can be used in devices for monitoring time shifts of correlation type signals. A correlation relative time shift meter is known, comprising a subtraction unit, a control unit, an averaging unit, a delay unit, and two multiplication units 1. The disadvantages of the known device is low reliability and accuracy of its work. . . The purpose of the invention is to improve the accuracy and reliability of the device. The goal is achieved in that the delay block, the third and fourth multiplication blocks, the adder, the first and second division blocks, the increment subtraction block, and the multiplication-sum block are added to the arrangement for measuring the time shift. The drawing shows a block diagram of the proposed device. The device for measuring the time shift contains an additional block 1 delay, block 2 delay, four blocks 3,4,5 and 6 multiplications, block 7 subtraction, block 8 summation, block 9 dividing, elok 10 increments, block 11 multiplying summation, block 12 division, block 13 averaged, block 14 of the display and block 15 of the control. The input of the additional delay unit 1 is connected to the first input 16 of the device and the first inputs of the first and second blocks 6 and 5 multiplication, the second inputs of which are connected respectively to the second input 17 of the device and the output of the delay block 2, the input of which is connected to the second input 17 of the device and the first input the fourth multiplication unit 3, the second input of which is connected to the first input of the third multiplication unit 4 and the output of the additional delay unit 1, and the output of the delay unit 2 is connected to the second input of the third multiplication unit 4. The outputs of multiplication blocks 4 and 5 are connected to the inputs of summation unit 8, and the multiplication blocks 3 and 6 are connected respectively to the subtraction and summation inputs of the readout unit 7, the output of which is connected to the first input of the division block 9, the second input - the input of the denominator is connected to the output of block 8 summation. The output of division block 9 is connected to the inputs of the increment calculation unit 10 and multiplication-summing unit 11, the outputs of which are connected respectively to the inputs of the numerator and denominator of the division unit 12, the output of which is connected to the input of the averaging unit 13, the control input of which is connected to the additional output of the unit 15 of the control unit, the output of which is connected to the control input of the display unit 14, whose information input is connected to the output of the averaging unit 13. The device works as follows. , . , . -.,. Before the measurements, as well as before the start of the next measurement, the signal from the auxiliary output of the control unit 15 is recorded in the averaging block 13 of the initial time shift value, against which changes in this relative time shift will then be counted. As such an initial value, it is possible to take, for example, a zero value, which later on in the display unit 14 is directly fixed at each time point increased or decreased at this time point, the relative time value, offset from the initial value. to inputs 16 and 17 of the device. At the outputs of block 2, the delay and the additional block 1 of delay, signals X and Y, shifted relative to the incoming signals by a period of four, are normalized. Input and generated, delayed signals are applied to blocks 3, 4, 5, and 6 multiplications. The signals from the outputs of blocks 4 and 5 of the multiplication are fed to block 8 summation. The signals from the outputs of blocks 3 and b of the multiplication are received by block 7 subtraction. The signals from the outputs of subtraction unit 7 and summation unit 8 are fed to the inputs of dividing unit 9, the output of which forms a signal, which is fed to the inputs of increment normalization unit 10 and summation multiplier 11. Calculation unit 10, when growing, calculates the derivative of the signal applied to its input. The received signals from the outputs of blocks 10 and 11 are fed to block 12, at the output of which a signal is formed, which is fed to the input of averaging block 13, at the output of which a signal is formed that is proportional to the change in the relative time shift compared to the original time. Apparatus of the Invention A device for measuring the time shift, comprising a subtraction unit, a control unit, an averaging unit, a delay unit, and two multiplication units and a display unit, which is designed so that, in order to increase reliability and accuracy, a delay unit, two multiplication units, a summation unit, two division units, an increment subtraction unit, a multiplication-summing unit, wherein the information and control inputs of the display unit are connected to. the outputs of the averaging and control units, whose auxiliary input is connected to the control input of the averaging unit, the input of the averaging unit is connected to the output of the first dividing unit, the inputs of which are connected to the outputs of the subtracting and incrementing and multiplying-summing blocks, the inputs of these two units are connected to the output of the second division unit the inputs of the second block of the case (not connected to the outputs of the blocks of clearing and summation, the inputs of the block. cyMMHpOBaHHifi are connected to the outputs of the second and third blocks of multiplication, the inputs of the subtraction block are connected to the output The first and fourth multiplication blocks, the second input of the second multiplication block are connected to the second input of the device and the first input of the fourth multiplication block, the second input of which is connected to the output of the additional delay block and the first input of the third multiplication block, the second input of this block is connected to the output of the delay block , and the input of the additional delay unit is connected to the first input of the device.Sources of information taken into account during the examination 1. USSR author's certificate No. 226959, cl. G 06 G 7/19, 1967.